/*
 * FCKeditor - The text editor for Internet - http://www.fckeditor.net
 * Copyright (C) 2003-2008 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *    http://www.gnu.org/licenses/gpl.html
 *
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    http://www.gnu.org/licenses/lgpl.html
 *
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.mozilla.org/MPL/MPL-1.1.html
 *
 * == END LICENSE ==
 *
 * This is the integration file for JavaScript.
 *
 * It defines the FCKeditor class that can be used to create editor
 * instances in a HTML page in the client side. For server side
 * operations, use the specific integration system.
 */

// FCKeditor Class
var FCKeditor = function (instanceName, width, height, toolbarSet, value) {
    // Properties
    this.InstanceName = instanceName;
    this.Width = width || '100%';
    this.Height = height || '200';
    this.ToolbarSet = toolbarSet || 'Default';
    this.Value = value || '';
    this.BasePath = FCKeditor.BasePath;
    this.CheckBrowser = true;
    this.DisplayErrors = true;

    this.Config = new Object();

    // Events
    this.OnError = null;	// function( source, errorNumber, errorDescription )
}

/**
 * This is the default BasePath used by all editor instances.
 */
FCKeditor.BasePath = '/fckeditor/';

/**
 * The minimum height used when replacing textareas.
 */
FCKeditor.MinHeight = 200;

/**
 * The minimum width used when replacing textareas.
 */
FCKeditor.MinWidth = 750;

FCKeditor.prototype.Version = '2.6.3';
FCKeditor.prototype.VersionBuild = '19836';

FCKeditor.prototype.Create = function () {
    document.write(this.CreateHtml());
}

FCKeditor.prototype.CreateHtml = function () {
    // Check for errors
    if (!this.InstanceName || this.InstanceName.length == 0) {
        this._ThrowError(701, 'You must specify an instance name.');
        return '';
    }

    var sHtml = '';

    if (!this.CheckBrowser || this._IsCompatibleBrowser()) {
        sHtml += '<input type="hidden" id="' + this.InstanceName + '" name="' + this.InstanceName + '" value="' + this._HTMLEncode(this.Value) + '" style="display:none" />';
        sHtml += this._GetConfigHtml();
        sHtml += this._GetIFrameHtml();
    }
    else {
        var sWidth = this.Width.toString().indexOf('%') > 0 ? this.Width : this.Width + 'px';
        var sHeight = this.Height.toString().indexOf('%') > 0 ? this.Height : this.Height + 'px';

        sHtml += '<textarea name="' + this.InstanceName +
            '" rows="4" cols="40" style="width:' + sWidth +
            ';height:' + sHeight;

        if (this.TabIndex)
            sHtml += '" tabindex="' + this.TabIndex;

        sHtml += '">' +
            this._HTMLEncode(this.Value) +
            '<\/textarea>';
    }

    return sHtml;
}

FCKeditor.prototype.ReplaceTextarea = function () {
    if (!this.CheckBrowser || this._IsCompatibleBrowser()) {
        // We must check the elements firstly using the Id and then the name.
        var oTextarea = document.getElementById(this.InstanceName);
        var colElementsByName = document.getElementsByName(this.InstanceName);
        var i = 0;
        while (oTextarea || i == 0) {
            if (oTextarea && oTextarea.tagName.toLowerCase() == 'textarea')
                break;
            oTextarea = colElementsByName[i++];
        }

        if (!oTextarea) {
            alert('Error: The TEXTAREA with id or name set to "' + this.InstanceName + '" was not found');
            return;
        }

        oTextarea.style.display = 'none';

        if (oTextarea.tabIndex)
            this.TabIndex = oTextarea.tabIndex;

        this._InsertHtmlBefore(this._GetConfigHtml(), oTextarea);
        this._InsertHtmlBefore(this._GetIFrameHtml(), oTextarea);
    }
}

FCKeditor.prototype._InsertHtmlBefore = function (html, element) {
    if (element.insertAdjacentHTML)	// IE
        element.insertAdjacentHTML('beforeBegin', html);
    else								// Gecko
    {
        var oRange = document.createRange();
        oRange.setStartBefore(element);
        var oFragment = oRange.createContextualFragment(html);
        element.parentNode.insertBefore(oFragment, element);
    }
}

FCKeditor.prototype._GetConfigHtml = function () {
    var sConfig = '';
    for (var o in this.Config) {
        if (sConfig.length > 0) sConfig += '&amp;';
        sConfig += encodeURIComponent(o) + '=' + encodeURIComponent(this.Config[o]);
    }

    return '<input type="hidden" id="' + this.InstanceName + '___Config" value="' + sConfig + '" style="display:none" />';
}

FCKeditor.prototype._GetIFrameHtml = function () {
    var sFile = 'fckeditor.html';

    try {
        if ((/fcksource=true/i).test(window.top.location.search))
            sFile = 'fckeditor.original.html';
    }
    catch (e) { /* Ignore it. Much probably we are inside a FRAME where the "top" is in another domain (security error). */
    }

    var sLink = this.BasePath + 'editor/' + sFile + '?InstanceName=' + encodeURIComponent(this.InstanceName);
    if (this.ToolbarSet)
        sLink += '&amp;Toolbar=' + this.ToolbarSet;

    html = '<iframe id="' + this.InstanceName +
        '___Frame" src="' + sLink +
        '" width="' + this.Width +
        '" height="' + this.Height;

    if (this.TabIndex)
        html += '" tabindex="' + this.TabIndex;

    html += '" frameborder="0" scrolling="no"></iframe>';

    return html;
}

FCKeditor.prototype._IsCompatibleBrowser = function () {
    return FCKeditor_IsCompatibleBrowser();
}

FCKeditor.prototype._ThrowError = function (errorNumber, errorDescription) {
    this.ErrorNumber = errorNumber;
    this.ErrorDescription = errorDescription;

    if (this.DisplayErrors) {
        document.write('<div style="COLOR: #ff0000">');
        document.write('[ FCKeditor Error ' + this.ErrorNumber + ': ' + this.ErrorDescription + ' ]');
        document.write('</div>');
    }

    if (typeof( this.OnError ) == 'function')
        this.OnError(this, errorNumber, errorDescription);
}

FCKeditor.prototype._HTMLEncode = function (text) {
    if (typeof( text ) != "string")
        text = text.toString();

    text = text.replace(
        /&/g, "&amp;").replace(
        /"/g, "&quot;").replace(
        /</g, "&lt;").replace(
        />/g, "&gt;");

    return text;
}

;(function () {
    var textareaToEditor = function (textarea) {
        var editor = new FCKeditor(textarea.name);

        editor.Width = Math.max(textarea.offsetWidth, FCKeditor.MinWidth);
        editor.Height = Math.max(textarea.offsetHeight, FCKeditor.MinHeight);

        return editor;
    }

    /**
     * Replace all <textarea> elements available in the document with FCKeditor
     * instances.
     *
     *    // Replace all <textarea> elements in the page.
     *    FCKeditor.ReplaceAllTextareas() ;
     *
     *    // Replace all <textarea class="myClassName"> elements in the page.
     *    FCKeditor.ReplaceAllTextareas( 'myClassName' ) ;
     *
     *    // Selectively replace <textarea> elements, based on custom assertions.
     *    FCKeditor.ReplaceAllTextareas( function( textarea, editor )
     *        {
	 *			// Custom code to evaluate the replace, returning false if it
	 *			// must not be done.
	 *			// It also passes the "editor" parameter, so the developer can
	 *			// customize the instance.
	 *		} ) ;
     */
    FCKeditor.ReplaceAllTextareas = function () {
        var textareas = document.getElementsByTagName('textarea');

        for (var i = 0; i < textareas.length; i++) {
            var editor = null;
            var textarea = textareas[i];
            var name = textarea.name;

            // The "name" attribute must exist.
            if (!name || name.length == 0)
                continue;

            if (typeof arguments[0] == 'string') {
                // The textarea class name could be passed as the function
                // parameter.

                var classRegex = new RegExp('(?:^| )' + arguments[0] + '(?:$| )');

                if (!classRegex.test(textarea.className))
                    continue;
            }
            else if (typeof arguments[0] == 'function') {
                // An assertion function could be passed as the function parameter.
                // It must explicitly return "false" to ignore a specific <textarea>.
                editor = textareaToEditor(textarea);
                if (arguments[0](textarea, editor) === false)
                    continue;
            }

            if (!editor)
                editor = textareaToEditor(textarea);

            editor.ReplaceTextarea();
        }
    }
})();

function FCKeditor_IsCompatibleBrowser() {
    var sAgent = navigator.userAgent.toLowerCase();

    // Internet Explorer 5.5+
    if (/*@cc_on!@*/false && sAgent.indexOf("mac") == -1) {
        var sBrowserVersion = navigator.appVersion.match(/MSIE (.\..)/)[1];
        return ( sBrowserVersion >= 5.5 );
    }

    // Gecko (Opera 9 tries to behave like Gecko at this point).
    if (navigator.product == "Gecko" && navigator.productSub >= 20030210 && !( typeof(opera) == 'object' && opera.postError ))
        return true;

    // Opera 9.50+
    if (window.opera && window.opera.version && parseFloat(window.opera.version()) >= 9.5)
        return true;

    // Adobe AIR
    // Checked before Safari because AIR have the WebKit rich text editor
    // features from Safari 3.0.4, but the version reported is 420.
    if (sAgent.indexOf(' adobeair/') != -1)
        return ( sAgent.match(/ adobeair\/(\d+)/)[1] >= 1 );	// Build must be at least v1

    // Safari 3+
    if (sAgent.indexOf(' applewebkit/') != -1)
        return ( sAgent.match(/ applewebkit\/(\d+)/)[1] >= 522 );	// Build must be at least 522 (v3)

    return false;
}
